The weld fumes ventilated purification apparatus
The utility model relates to a kind of plant gas treating apparatus, particularly a kind for the treatment of apparatus that can carry out ventilation cleaning to the flue dust that the on-site welding produces.
The weld fumes particle diameter that produces in the welding process is generally less, average grain diameter is about 1 μ m, can directly enter the alveolar of human body, and contain a large amount of poisonous and hazardous materials in its fume, the long-term weld fumes that sucks high concentration, can make it in pulmonary deposition, cause the generation of electric welder pneumoconiosis disease.
Use hydrogen controlled electrode, flue dust content of fluoride height, its flue dust is even more serious than acidic electrode to the stimulation of the upper respiratory tract during welder's operation, especially soluble fluoride can absorb through alveolar, directly enter blood, operation in high concentration flue dust environment can cause the generation of fluorosis of bone for a long time.
Therefore, the harm of welding fume can not be ignored, and takes effective venting practice, the weld fumes that produces in capture and the eliminating operation process, and the concentration of flue dust is to improve workman's operating environment in the reduction operation band air, the effective way of protection workers ' health.
The employing that has at present combines the weld fumes treatment system with air-conditioning mode can provide the more working environment of high-quality for the welder, but this weld fumes treatment system cost is too high.
Summary of the invention
The utility model main purpose is to address the above problem and is not enough, a kind of weld fumes ventilated purification apparatus is provided, can be fast that the most of weld fumes in the welding factory building is outdoor by purifying discharge, fundamentally improve welding operation workman's operating environment, minimizing injures the staff, and space layout is reasonable, and operating cost is low.
For achieving the above object, described weld fumes ventilated purification apparatus:
Comprise blast pipe, draft chamber, clean room, exhaust duct, described blast pipe is connected in the entrance point that inside is provided with the draft chamber of centrifugal blower, at least one air inlet is set on described blast pipe, the port of export of described draft chamber connects clean room and exhaust duct successively, described draft chamber and clean room are connected as a single entity and are located in the same housing, and described clean room is made up of static pressure expansion chamber, grid clarifier and deashing chamber.
On the inwall of described draft chamber, post sound-absorbing material, second level grid clarifier is set between described deashing chamber and exhaust duct, a by-pass valve control is set between second level grid clarifier and exhaust duct again, a silencing apparatus is installed on exhaust duct again.
Between described air inlet and described blast pipe, can also connect a cantilever.
Described weld fumes ventilated purification apparatus also comprises an air-supply arrangement, in be provided with a centrifugal blower, the outlet of described air-supply arrangement connects air supply duct, porch at described air-supply arrangement is provided with air cleaner, and one group of heating coil that can heat the air-flow that passes through is set between described centrifugal blower and air cleaner.
Content to sum up, weld fumes ventilated purification apparatus provided by the utility model, compared with prior art, beneficial effect is:
(1) by forced ventilation and air draft, can fast the most of weld fumes in the welding factory building be reached the national requirements discharging by filtration, fundamentally improve welding operation workman's operating environment, minimizing injures the staff, improve welding quality, the air rate of ventilation guarantees that at 5-6 time/hour room air is fresh, and sanitary index is up to state standards.
(2) intake stack that is used to discharge fume can be arranged on the top of welding factory building, and the outlet of air supply duct can be arranged on the surroundings wall of factory building, and pipe arrangement does not change and influences the production technology layout, and the space is reasonable, and is simple to operation.
(3) do not have easily consumption parts, system is stable, and operating cost is low.
(4) in the winter time the time, not only can guarantee to weld the temperature requirement of welding procedure in the factory building, can also make welding operation workman's working environment more comfortable.
Description of drawings
Fig. 1 the utility model structural representation;
Fig. 2 the utility model air-supply arrangement structural representation;
Fig. 3 the utility model has the structural representation of cantilever;
The structural representation of Fig. 4 swinging movable cantilever.
As shown in Figures 1 to 4, blast pipe 1, draft chamber 2, clean room 3, exhaust duct 4, air inlet 5, static pressure expansion chamber 6, grid clarifier 7, deashing chamber 8, second level grid clarifier 9, silencing apparatus 10, cantilever 11, by-pass valve control 12, air-supply arrangement 13, air supply duct 14, centrifugal blower 15, heating coil 16, air cleaner 17, centrifugal blower 18, rotary flange 19, pipeline 20.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:
As depicted in figs. 1 and 2, described weld fumes ventilated purification apparatus:
Comprise blast pipe 1, draft chamber 2, clean room 3, exhaust duct 4, blast pipe 1 is connected in the entrance point that inside is provided with the draft chamber 2 of centrifugal blower 18, at least one air inlet 5 is set on blast pipe 1, air inlet 5 directly is opened on the blast pipe 1, the port of export of draft chamber 2 connects clean room 3 and exhaust duct 4 successively, and draft chamber 2 is connected as a single entity with clean room 3 and is located in the same housing.
Clean room 3 is important component parts of whole weld fumes ventilated purification apparatus, and its major function is the welding fume collection and purification that suck by air inlet 5.Clean room 3 is made up of static pressure expansion chamber 6, grid clarifier 7 and deashing chamber 8, because welding fume is thinner, and flue dust is more sticking, therefore, and at its physicochemical property, select grid clarifier filtering smoke for use, by inertial collision, adhere to effects such as gravity, grit is got off by detention, and the resistance of grid clarifier is generally 20～30mmH
2O, and dismounting is flexibly, cleaning is convenient, and easy care in actual use, can regularly replace the grid clarifier, and the specification of grid clarifier can design according to the air quantity of whole weld fumes ventilated purification apparatus.The function of static pressure expansion chamber 6 is the controlled wind speed equilibriums that guarantee grid clarifier 7 cups, improves purification efficiency, can also make the sedimentation of the first-class bulky grain thing of the welding rod that sucks in the welding process.Deashing chamber 8 is openable, when needs cleaning deashing chamber 8 and replacing grid clarifier, all can earlier deashing chamber 8 be opened, and safeguards more convenient.
Blast pipe 1 generally is arranged in the top of welding factory building, can design according to the space situation of factory building, can not change and influence the production technology layout like this, in addition, because the flue dust temperature of welding is very high, it can rise to the top of factory building along with hot-air, and blast pipe 1 is arranged in the top, also more helps weld fumes is all siphoned away.
Draft chamber 2, clean room 3 and exhaust duct 4 all are positioned over the outdoor of welding factory building, the running noise that so not only can reduce centrifugal blower 18 influences working environment, can also guarantee when deashing chamber 8 is cleaned and change the grid clarifier, can the environment in the factory building not to be polluted.On the inwall of described draft chamber, also post sound-absorbing material,, the noise index is up to state standards so that effectively reduce the noise that centrifugal blower 18 produces in the running.
Second level grid clarifier 9 is set between described deashing chamber 8 and exhaust duct 4 again, passes through the air of two-step purification like this, reach the national environmental protection emission standards fully, can directly be thrown in the atmosphere.
A by-pass valve control 12 is set between described second level grid clarifier 9 and exhaust duct 4 again, both be arranged on the porch of exhaust duct 4, general this by-pass valve control 12 is selected the electronic leafy by-pass valve control of splitting for use, under normal operating conditions, this by-pass valve control 12 is an open mode, after quitting work, by-pass valve control 12 can be closed, avoid extraneous foreign material to enter in the clean room 3 by exhaust duct 4.
A silencing apparatus 10 is installed on described exhaust duct 4.
Because welding fume is along with air flows together, so in order more quickly the weld fumes in the factory building to be got rid of, increase the speed that air flows in the factory building, in described weld fumes ventilated purification apparatus, also be provided with an air-supply arrangement 13, it is the housing that a centrifugal blower 15 is equipped with in an inside, be positioned over the outdoor of factory building, the outlet of described air-supply arrangement 13 connects air supply duct 14, on the wall around the air outlet of air supply duct 14 evenly is arranged in the factory building, because the wind-warm syndrome degree that air supply duct 14 send is relatively low, so air outlet is arranged on the position near ground, more helps air circulation.In the porch of described air-supply arrangement 13 air cleaner 17 is set, be used to filter the air that enters from the external world, the air that guarantees to send in the factory building all is fresh clean, and the air rate of ventilation can reach 5-6 time/hour, the assurance room air is fresh, and sanitary index is up to state standards.
One group of heating coil 16 that can heat the air-flow that passes through is set between centrifugal blower 15 and air cleaner 17, and the import and export of heating coil 16 all are communicated with the heating equipment of factory building.In the time of in the winter time, not only can guarantee to weld the temperature requirement of welding procedure in the factory building, can also make welding operation workman's working environment more comfortable.
Exit at each air supply duct 14 can also be provided with the volume damper (not shown) respectively, can regulate the air quantity and the blast of the pipeline of respectively blowing, and according to each pipeline difference of service time, in time closes volume damper, can save energy resource consumption greatly.
The operation principle of this weld fumes ventilated purification apparatus and the course of work are such: under normal welding job state, air-supply arrangement 13 is blown in factory building, make the air flow faster in the factory building, utilize the suction force of the centrifugal blower 18 in the draft chamber 2 again, suck in the blast pipe 1 by air inlet 5 welding the flue dust that is produced in the welding factory building, enter static pressure expansion chamber 6 and grid clarifier 7 by draft chamber 2 again, reach the purpose that purifies flue dust, cleaned gas arrives deashing chamber 8, again by second level grid clarifier 9, by-pass valve control 12 and exhaust duct 4 enter in the atmosphere.
As shown in Figure 3 and Figure 4, the utility model can also have another kind of embodiment, can also connect a cantilever 11 between described air inlet 5 and described blast pipe 1, and cantilever 11 can be helicoid, also can be fixed, helicoid cantilever 11 be made up of rotary flange 19 and pipeline 20.One end of cantilever 11 is communicated in air inlet 5, and the other end is communicated in blast pipe 1.Its major function is the dissipation according to weld job scope control flue dust, utilize cantilever 11 support and control weld job point far away, it is mainly used in bulk storage workpiece and the bigger station of welding scope on the ground, helicoid cantilever 11 can rotate in 360 ° of scopes around center flange 19, make air inlet 5 can be parked in each location point, weld fumes can be controlled effectively.
Other structure in the present embodiment and operation principle and the course of work are same as above.
As mentioned above, given in conjunction with the accompanying drawings and embodiments scheme content can derive the similar techniques scheme.In every case be the content that does not break away from technical solutions of the utility model, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical solutions of the utility model according to technical spirit of the present utility model.